Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/138197
Title: Current oscillations and intermittent emission near an electrode interface in a hybrid organic-inorganic perovskite single crystal
Authors: Hettiarachchi, Chathuranga
Xie, Aozhen
Nguyen, Tien Hoa
Yu, Junhong
Maddalena, Francesco
Dinh, Xuan Quyen
Muhammad Danang Birowosuto
Dang, Cuong
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Hettiarachchi, C., Xie, A., Nguyen, T. H., Yu, J., Maddalena, F., Dinh, X. Q., . . . Dang, C. (2019). Current oscillations and intermittent emission near an electrode interface in a hybrid organic-inorganic perovskite single crystal. ACS Applied Materials & Interfaces, 11(45), 42838-42845. doi:10.17645/mac.v7i4.2275
Journal: ACS Applied Materials & Interfaces
Abstract: Hybrid organic-inorganic lead perovskites have a great potential in optoelectronic device applications because of their high stability, narrow band emission, and strong luminescence. Single crystals with few defects are the best candidates to disclose a variety of interesting and important properties for light-emitting devices. Here, we investigate a single-crystalline CH3NH3PbBr3 perovskite for its transport and electroluminescence properties. A simple fabrication method was used to obtain a 10 ± 2 μm channel between two gold wire electrodes, which showed bright intermittent electroluminescence near the interface of one wire after cooling down with a constant biasing voltage. The active region of the perovskite single crystal was pristine, well isolated from surroundings through fabrication to the characterization process. Our presented sample provided an ideal condition to study bulk ionic-electronic properties of hybrid halide perovskites. At constant 6 V bias, the current through the sample shows temperature-dependent oscillation with Arrhenius behavior, suggesting a thermally activated process. The light emission from the sample experiences an intermittent emission rate once every 26 ± 6 min. Here, we envisage that the current oscillations and intermittent emission are caused by ion-mediated negative differential resistance and conductive filament formation, respectively. The latter observation inspires future applications of the material from neuromorphic computing to the development of electroluminescence devices.
URI: https://hdl.handle.net/10356/138197
ISSN: 1944-8244
DOI: 10.1021/acsami.9b15791
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsami.9b15791
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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